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Added ObjectPatternPropertiesTransformer. Added helper for stubbing s…
…elected node transformers.
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sanex3339
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Jul 31, 2020
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72 changes: 72 additions & 0 deletions
72
src/node-transformers/converting-transformers/ObjectPatternPropertiesTransformer.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| import { inject, injectable, } from 'inversify'; | ||
| import { ServiceIdentifiers } from '../../container/ServiceIdentifiers'; | ||
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| import * as ESTree from 'estree'; | ||
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| import { IOptions } from '../../interfaces/options/IOptions'; | ||
| import { IRandomGenerator } from '../../interfaces/utils/IRandomGenerator'; | ||
| import { IVisitor } from '../../interfaces/node-transformers/IVisitor'; | ||
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| import { NodeTransformationStage } from '../../enums/node-transformers/NodeTransformationStage'; | ||
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| import { AbstractNodeTransformer } from '../AbstractNodeTransformer'; | ||
| import { NodeGuards } from '../../node/NodeGuards'; | ||
| import { NodeUtils } from '../../node/NodeUtils'; | ||
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| @injectable() | ||
| export class ObjectPatternPropertiesTransformer extends AbstractNodeTransformer { | ||
| /** | ||
| * @param {IRandomGenerator} randomGenerator | ||
| * @param {IOptions} options | ||
| */ | ||
| public constructor ( | ||
| @inject(ServiceIdentifiers.IRandomGenerator) randomGenerator: IRandomGenerator, | ||
| @inject(ServiceIdentifiers.IOptions) options: IOptions | ||
| ) { | ||
| super(randomGenerator, options); | ||
| } | ||
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| /** | ||
| * @param {NodeTransformationStage} nodeTransformationStage | ||
| * @returns {IVisitor | null} | ||
| */ | ||
| public getVisitor (nodeTransformationStage: NodeTransformationStage): IVisitor | null { | ||
| switch (nodeTransformationStage) { | ||
| case NodeTransformationStage.Converting: | ||
| return { | ||
| enter: (node: ESTree.Node, parentNode: ESTree.Node | null): ESTree.Node | undefined => { | ||
| if (parentNode && NodeGuards.isPropertyNode(node)) { | ||
| return this.transformNode(node, parentNode); | ||
| } | ||
| } | ||
| }; | ||
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| default: | ||
| return null; | ||
| } | ||
| } | ||
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| /** | ||
| * replaces: | ||
| * const {foo} = bar; | ||
| * | ||
| * on: | ||
| * const {foo: foo} = bar; | ||
| * | ||
| * @param {Property} propertyNode | ||
| * @param {NodeGuards} parentNode | ||
| * @returns {NodeGuards} | ||
| */ | ||
| public transformNode (propertyNode: ESTree.Property, parentNode: ESTree.Node): ESTree.Node { | ||
| if (!NodeGuards.isObjectPatternNode(parentNode) || !propertyNode.shorthand) { | ||
| return propertyNode; | ||
| } | ||
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| propertyNode.shorthand = false; | ||
| propertyNode.value = NodeUtils.clone(propertyNode.value); | ||
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| NodeUtils.parentizeNode(propertyNode.value, parentNode); | ||
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| return propertyNode; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| import * as mocha from 'mocha'; | ||
| import * as sinon from 'sinon'; | ||
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| import { INodeTransformer } from '../../src/interfaces/node-transformers/INodeTransformer'; | ||
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| export function stubNodeTransformers (nodeTransformers: (new (...args: any[]) => INodeTransformer)[]): void { | ||
| const transformerStubs: sinon.SinonStub[] = []; | ||
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| mocha.before(() => { | ||
| for (const nodeTransformer of nodeTransformers) { | ||
| const stub: sinon.SinonStub = sinon | ||
| .stub(nodeTransformer.prototype, 'getVisitor') | ||
| .callsFake(() => null); | ||
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| transformerStubs.push(stub); | ||
| } | ||
| }); | ||
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| mocha.after(() => { | ||
| for (const stub of transformerStubs) { | ||
| stub.restore(); | ||
| } | ||
| }); | ||
| } |
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